v4.0.0

New Features

• Add a function to output Mantid MDHistogramWorkspaces (sw_spec2MDHisto)
• Add Python plotting of magnetic structure using vispy
• Add mex files to compute main loop in spinwave() enabling a 2x - 4x speed up depending on system size
• Add python wrapper for all Matlab functions so e.g. sw_plotspec etc can be called without the m. prefix in pyspinw:q

Improvements

• Replace spinwavefast() method with a new fastmode option in the main spinwave() method to reduce confusion
• Adds a neutron_output option to spinwave() to compute only the neutron (Sperp) cross-section and not the full spin-spin correlation tensor, saving memory

Bug Fixes

• Corrects equation for Q-range from thetaMin in sw_instrument and add thetaMax option
• Fixes sw_issymspec to recognise powder spectra
• Fixes a parsing error in the spinw.fourier method if no sublat option given.
• Fixes several bugs in sw_plotspec where it ignores user options in 'auto' mode, and where it inverts user supplied colormaps.
• Fixes several bugs in .fitspec() for handling twins and where it only outputs the final chi^2 values.